/*!	 keyframewaypointset.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "keyframewaypointset.h"
#include <synfigapp/canvasinterface.h>
#include <synfig/valuenodes/valuenode_dynamiclist.h>
#include <synfig/valuenodes/valuenode_animated.h>
#include "activepointsetsmart.h"
#include "waypointsetsmart.h"

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT(Action::KeyframeWaypointSet);
ACTION_SET_NAME(Action::KeyframeWaypointSet, "KeyframeWaypointSet");
ACTION_SET_LOCAL_NAME(Action::KeyframeWaypointSet, N_("Set Waypoints at Keyframe"));
ACTION_SET_TASK(Action::KeyframeWaypointSet, "set");
ACTION_SET_CATEGORY(Action::KeyframeWaypointSet, Action::CATEGORY_KEYFRAME);
ACTION_SET_PRIORITY(Action::KeyframeWaypointSet, 0);
ACTION_SET_VERSION(Action::KeyframeWaypointSet, "0.0");
ACTION_SET_CVS_ID(Action::KeyframeWaypointSet, "$Id$");

Action::KeyframeWaypointSet::KeyframeWaypointSet()
{
    keyframe.set_time(Time::begin() - 1);
    set_dirty(false);
}

Action::ParamVocab
Action::KeyframeWaypointSet::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    ret.push_back(ParamDesc("keyframe", Param::TYPE_KEYFRAME)
                  .set_local_name(_("Keyframe"))
                 );

    ret.push_back(ParamDesc("model", Param::TYPE_WAYPOINTMODEL)
                  .set_local_name(_("Waypoint Model"))
                 );

    return ret;
}

bool
Action::KeyframeWaypointSet::is_candidate(const ParamList &x)
{
    return candidate_check(get_param_vocab(), x);
}

bool
Action::KeyframeWaypointSet::set_param(const synfig::String& name, const Action::Param &param)
{
    if (name == "keyframe" && param.get_type() == Param::TYPE_KEYFRAME) {
        keyframe = param.get_keyframe();

        return true;
    }

    if (name == "model" && param.get_type() == Param::TYPE_WAYPOINTMODEL) {
        waypoint_model = param.get_waypoint_model();

        return true;
    }

    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::KeyframeWaypointSet::is_ready()const
{
    if (keyframe.get_time() == (Time::begin() - 1) || waypoint_model.is_trivial()) {
        return false;
    }

    return Action::CanvasSpecific::is_ready();
}

void
Action::KeyframeWaypointSet::prepare()
{
    clear();

    try {
        get_canvas()->keyframe_list().find(keyframe);
    } catch (synfig::Exception::NotFound) {
        throw Error(_("Unable to find the given keyframe"));
    }

    {
        std::vector<synfigapp::ValueDesc> value_desc_list;
        get_canvas_interface()->find_important_value_descs(value_desc_list);

        while (!value_desc_list.empty()) {
            process_value_desc(value_desc_list.back());
            value_desc_list.pop_back();
        }
    }
}

void
Action::KeyframeWaypointSet::process_value_desc(const synfigapp::ValueDesc& value_desc)
{
    if (value_desc.is_value_node()) {
        ValueNode_Animated::Handle value_node(ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node()));

        if (value_node) {
            Action::Handle action(WaypointSetSmart::create());

            action->set_param("canvas", get_canvas());
            action->set_param("canvas_interface", get_canvas_interface());
            action->set_param("value_node", ValueNode::Handle(value_node));

            Waypoint waypoint;

            try {
                waypoint = *value_node->find(keyframe.get_time());
            } catch (...) {
                waypoint.set_time(keyframe.get_time());
                waypoint.set_value((*value_node)(keyframe.get_time()));
            }

            keyframe.apply_model(waypoint_model);
            *get_canvas()->keyframe_list().find(keyframe) = keyframe;

            waypoint.apply_model(waypoint_model);

            action->set_param("waypoint", waypoint);

            assert(action->is_ready());

            if (!action->is_ready()) {
                throw Error(Error::TYPE_NOTREADY);
            }

            add_action_front(action);
        }
    }
}